From 094d028a7968236cd2b7f7b96394f7a3b8ad97c8 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Thu, 12 May 2016 13:22:26 +0100 Subject: target-arm: Split data abort syndrome generator Split the data abort syndrome generator into two versions: One with a valid Instruction Specific Syndrome (ISS) and another without. The following new flags are supported by the syndrome generator with ISS: * isv - Instruction syndrome valid * sas - Syndrome access size * sse - Syndrome sign extend * srt - Syndrome register transfer * sf - Sixty-Four bit register width * ar - Acquire/Release These flags are not yet used, so this patch has no functional change except that we will now correctly set the IL bit in data abort syndromes without ISS information. Signed-off-by: Edgar E. Iglesias Message-id: 1461931684-1867-5-git-send-email-edgar.iglesias@gmail.com> [PMM: squashed in with patch which was just adding the IL bit] Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- target-arm/internals.h | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) (limited to 'target-arm/internals.h') diff --git a/target-arm/internals.h b/target-arm/internals.h index 2e70272..54a0fb1 100644 --- a/target-arm/internals.h +++ b/target-arm/internals.h @@ -263,7 +263,9 @@ enum arm_exception_class { #define ARM_EL_EC_SHIFT 26 #define ARM_EL_IL_SHIFT 25 +#define ARM_EL_ISV_SHIFT 24 #define ARM_EL_IL (1 << ARM_EL_IL_SHIFT) +#define ARM_EL_ISV (1 << ARM_EL_ISV_SHIFT) /* Utility functions for constructing various kinds of syndrome value. * Note that in general we follow the AArch64 syndrome values; in a @@ -383,11 +385,27 @@ static inline uint32_t syn_insn_abort(int same_el, int ea, int s1ptw, int fsc) | (ea << 9) | (s1ptw << 7) | fsc; } -static inline uint32_t syn_data_abort(int same_el, int ea, int cm, int s1ptw, - int wnr, int fsc) +static inline uint32_t syn_data_abort_no_iss(int same_el, + int ea, int cm, int s1ptw, + int wnr, int fsc) { return (EC_DATAABORT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT) - | (ea << 9) | (cm << 8) | (s1ptw << 7) | (wnr << 6) | fsc; + | ARM_EL_IL + | (ea << 9) | (cm << 8) | (s1ptw << 7) | (wnr << 6) | fsc; +} + +static inline uint32_t syn_data_abort_with_iss(int same_el, + int sas, int sse, int srt, + int sf, int ar, + int ea, int cm, int s1ptw, + int wnr, int fsc, + bool is_16bit) +{ + return (EC_DATAABORT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT) + | (is_16bit ? 0 : ARM_EL_IL) + | ARM_EL_ISV | (sas << 22) | (sse << 21) | (srt << 16) + | (sf << 15) | (ar << 14) + | (ea << 9) | (cm << 8) | (s1ptw << 7) | (wnr << 6) | fsc; } static inline uint32_t syn_swstep(int same_el, int isv, int ex) -- cgit v1.1